bosohert



(No Model.)

' R. E. BOSOHERT.

POWER INDICATOR FOR PRESSES. No. 264,435. Patented Sept. 19. 1882.

WITNEEEE5 NVENTUR- -m w mh wlzmzgdzz .(:Z..JM A I I UNITED STATES PATENTOFFICEQ RUFUS E. BOSUHERT, OF SYRACUSE, NEW YORK.

POWER-INDICATOR FOR PRESSES.

SPECKFIOATION forming part of Letters Patent No. 264,485, datedSeptember 19, 1882,

Application filed April 22, 1882.

To all whom tt may concern Be it known that I, RUFUS E. BoscHERT, ofSyracuse, in the county of Onondagaand State of New York, have inventednew and useful Improvements in Power-Indicators for Presses, of whichthe following, taken in connection with the accompanying drawings, is afull, clear, and exact description.

This invention relates to devices applied to either the head-block orfoot-block of a press for the purpose of ascertaining the deflection ofsaid parts incident to the strain transmitted thereto during the processof pressing, and consequently serving to indicate the power exerted bythe press; and it has more particularly reference to the indicatorforwhich George B. Boomer obtained Letters Patent No. 170,467, datedNovember 30, 1875.

The object of this invention is to render the indicator adjustable, moresensitive, accurate, and effective in its operation 5 and to thatend theinvention consists in certain novel construction of the details oftheindicator and devices connected therewith, as hereinafter fullydescribed, and specifically set forth in the claims.

In the accompanying drawings, Figure 1 is a front elevation of a pressprovided with my improvements. Fig. 2 is an enlarged transverse sectionon line 00 as in Fig. 1. Fig. Bis an enlarged view of the pivoted end ofthe indicator and its connection with the actuatinglever thereof, andFig. 4 a longitudinal section of the same.

Similar letters of reference indicate corresponding parts.

A A represent the head-block and foot-block, respectively, ofatoggle'press, said parts being tied to each other at their extremitiesby rods B l.

C is the follower, arranged between the headblock and foot-block, andoperated by toggles D D, connected to the follower and head-block,respectively, and by a right-and-left screw, E, which works in nuts N,forming the knuckle or knee-joint ot the toggles, in the usual manner.

In operating the press the strain is thrown onto the central portion ofthe head'block and foot-block A, and consequently said parts are liableto deflect or spring out of line at the center when subjected toexcessive strain. In or- (Xo model.)

der to accurately and prominentlyindicate the aforesaid deflection, andthus guard against injury to the press by excessive application ofpower, I employ the following instrumentalities: To one end of thehead-block A,pret'erably on the front face thereof, I pivot a lever, L,which is extended to the opposite end or the press-head, and rests atthe centeron an adjustable fulcrunnn, which 1 form of a set-screwpassing vertically through the lower extremity of a strap or rod, 1',which is suspended from a lug or ear, h, on the press-head, and isprovided in its pendent portion with a vertical slot, 8, through whichthe lever L passes. The upper end of the set-screw n protrudes at thelower extremity of the slots, and is made conical to form a sensitivefulcrum for the lever L, which rests thereon.

d is a hook connected to thepress-head near the free end of the lever L,and having its free end engaging pivotal bearings b on the sides of theheel end of the pointer P, which latter is extended through the slot ofthe suspensionrod r and to the pivoted end of the leverL, where it movesover an indicatorscale, V, and is guarded by a plate, c, which isextended from the bottom of the scale to the top ot'the same and acrossthe pointer P. Said pointer consists of aslenderlight plate orstrip ofmetal secured at its heel end to a cast-metal shank, m, on which arecast the bearings l),beforedescribed. Horizontally through the shank inis a slot, 0, in which is arranged a blook,a ,adapted to slide in thedirection of t-helength ot' the pointer. Said block a is providedon itsunder side with a Vshaped bearing-point, by which it rests on thefreeend ofthe lever L. By means of a set-screw, g, inserted through thetop of the shank m and engaging the top of theblock a, the lattersecured in itsdesired position. By setting the block (t at a greater orless distance from the bearings I) l) the movement of the pointer isdiminished or increased propoi tionally, and may therefore be adjustedso as to render it more or less sensitive, according to the limit of thepower to be used in the press.

In order to prevent as much as possible the vibration of the free end ofthe described slender pointer P, I provide the shank n1v with a;rearward extension, is, and apply to the latter a counterpoise,n,adapted to be set at a greater IJO latter in turn imparts anupwardpressure on the bearing a of the pointer P, and thus lifts the free endof the same, the scaleV, over which the pointer moves, indicating thepower resisted by the head-block.

It is obvious that the described indicator can be applied to thefoot-block of the press as well as to the head-block, and produce thesame effeet. I therefore do not limit myself in that respect.

WVhat I claim as my invention, and desire to secure by Letters Patent,is-- 1. In combination with the head-block or foot-block A, fulcrum n,lever L, and link or hook d, the pointer P, provided with a bearing, (1,arranged adjustably in its proximity to the pivot b, substantially asdescribed and shown, for the purpose set forth.

3. In combination with the head or footblock A, fulcrum a, lever L, andhook d, the pointer I, provided with the slot 6, movable block a, andset-screw g, as shown and described.

In testimony whereof I have signed my name and affixed my seal, in thepresence of two attesting witnesses, at Syracuse, in the county ofOnondaga and State of New York,this 19th day of April, 1882.

RUFUS E. BOSOHERT.

Witnesses:

O. H. DUELL, WM. 0. RAYMOND.

